From: Tejun Heo <tj@kernel.org>
Date: Mon, 5 Mar 2012 21:15:29 +0000 (-0800)
Subject: block: make blk-throttle preserve the issuing task on delayed bios
X-Git-Tag: v3.5-rc1~42^2~57
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=671058fb2a2aac4e70f01b316b06bc59b98bd138;p=pandora-kernel.git

block: make blk-throttle preserve the issuing task on delayed bios

Make blk-throttle call bio_associate_current() on bios being delayed
such that they get issued to block layer with the original io_context.
This allows stacking blk-throttle and cfq-iosched propio policies.
bios will always be issued with the correct ioc and blkcg whether it
gets delayed by blk-throttle or not.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

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